What This Means
The 400 point Alaska option is interior GTY and carries a small fare add-on, but it establishes the floor. From there, Alaska becomes much more usable at 600 and 800 points, where the region mix expands and the cabin mix starts to include balcony GTY and oceanview GTY.
The strongest Alaska value at 800 points is the Anthem of the Seas 7n Southbound Alaska & Hubbard Glacier Balcony GTY sailing from Seward. That is the point where Alaska stops being a novelty and starts looking like a real target.
At 2,000 points and above, Alaska becomes a regular part of the top-five lists, especially on Quantum of the Seas out of Seattle. If you are asking where Alaska first becomes practical, the answer is 400 points. If you are asking where it becomes attractive, 800 points is the better threshold.